This fairly common red/blue grow lamp has a rather pleasing array of 126 LEDs arranged as 90 red with a star of 36 blue.
Hyped power is 15W. Measured power is 5.5W. Actual power dissipated in LED panel is 5W.
Lamp uses a switching buck regulator that puts out 50V at 100mA and does NOT have an isolated output.
All solder joints on the front of the PCB should be treated as being at full mains voltage. This doesn't seem like a very good idea for a grow light, as the plants will naturally grow towards the lamp and if a juicy shoot or stem touches any metal, then the whole plant will become live.